Warner Bros. has agreed to license several films to Netflix as part of a test run of the Internet company’s upcoming movie download service.

The agreement adds to speculation that Netflix and TiVo plan to jointly introduce a video-on-demand (VOD) service next year. The service would allow subscribers to rent and download films via Netflix, whose Internet site now only delivers DVDs via the U.S. Postal Service. The downloaded film would then be accessible on TiVo’s personal video recorders for viewing on a TV set.

CNET News said the agreement does not yet constitute a deal from Warner Bros. to participate in a commercial video-on-demand service from Netflix, which is still in the planning phases. None of the principals would comment.